Which detail from the passage BEST supports the author's perspective

Evidently there is no vulgar assassin. The liberal military code makes provisions for many kinds of persons and gentlemen are not excluded.

Explanation:

War does not distinguish between the military and the civilian acts of the battle is best supported by this that the military codes which are made are the same for the people of the civilians and the military men.

The word "gentlemen" is not used for referring to the military men. It is used for referring to the civilians. So this sentences supports the excerpt that in the savage war like category, both the members of the military and the civilians are included. No one is excluded and there is no discrimination among these during the time of war.